Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Section 4 Part Replacement For Models: JGH:E:K:T Valves Most valves in cylinders of JGH:E:K:T frames use non-metallic plates. Before servicing any valve, see the correct valve assembly drawing and parts list and manufacturer literature in the Parts Book. On the valve assembly drawing, note that valves use different springing for different pressures. The cylinder cover sheet in the Parts Book lists the valve originally supplied with each cylinder. Different operating conditions may require different springing. Base suction valve selection on operating suction pressure and discharge valve selection on operating discharge pressure. Proper valve spring selection is also based on operating speed (RPM), gas specific gravity, and gas suction temperature. Contact your packager and/or Ariel for assistance in valve selection. CAUTION: Before attempting to remove any valve cap, vent ALL pressure from the compressor cylinder in both the suction and discharge cylinder passages. Valve Removal 1. Slightly loosen all cap screws on a valve cap; the cap should stay in its original position. If it pushes outward, STOP! Completely vent the cylinder. See Caution above. See Fig. 4-6. 2. After all the above safety checks and with cap screws still in place but loosened, pry the valve cap out until the O-ring clears the cylinder to confirm proper cylinder venting. Use a pair of pry bars or screwdrivers, one on each side of the cap, to pry it out. 3. Remove cap screws and valve cap. CAUTION: The valve cap, retainer, and/or valve may fall out of bottom valve pockets if not supported. Support them carefully after removing cap screws to prevent personal injury. 4. With the retainer still in place, thread a valve tool over the valve center bolt. See Fig. 1-1. 5. It may be necessary to loosen the plastic thumb screws in the valve retainers. 6. For high pressure applications that use a metallic wire gasket seal, the cylinder vents upon loosening the cap screws. Use the valve removal tool shown in Fig. 1-1 to unseat the metallic wire gasket. 7. Pull out the valve and retainer together. 8. Cylinder class 2-5/8K-FS-HE and 2-5/8T-FS-HE tandem cylinders require removal of suction and discharge piping and the cylinder head to access the concentric valve. A concentric valve combines suction and discharge valves in one assembly. See Caution at “Piston and Rod Removal” on page 4-8. 9. In most cases, the flat metal gasket remains in the pocket. It is difficult to see. A flashlight and a small mirror on an adjustable rod are the best tools to see the gasket clearly. On cylinders with horizontal valves, the gasket may fall into the gas passage. Use a small magnet on a flexible extension rod to fish it out. For optimum sealing, replace valve seat gaskets anytime a valve is removed from a cylinder of a unit that has been in service. PAGE 4-6 3/11
For Models: JGH:E:K:T Section 4 Part Replacement Valve Installation 1. Coat the 1/32 inch (0.8 mm) or 1/16 inch (1.6 mm) thick soft metallic flat gasket with an anti-seize lubricant. Then either insert it into the valve pocket or stick it on the valve. In either case, be careful not to allow this gasket to fall into the gas passage. 2. Install suction valves only in suction pockets and discharge valves only in discharge pockets. The valve pockets have identification plates. Install all valves with valve fastener(s) positioned away from the cylinder bore. If a valve is not marked for suction or discharge, or to verify the type, manually 1/8” (3 mm) 12-Point Capscrew (Center Bolt) Threaded Washer Valve Retainer Suction Valve Plate Suction Valve Spring depress the valve plate. Preferably, use a tool softer than the valve plate material or exercise care to prevent damage to the plate. A suction valve plate may be depressed only from the valve fastener (bolting) side of the valve; a discharge valve plate may be depressed only from the side of the valve that faces the cylinder bore. See Fig. 4-6. 3. Use the Valve Installation Tool (see Fig. 1-1) to insert the valve and retainer into the pocket together. Verify the valve seats properly in the pocket. When installed correctly, the valve rotates freely by hand, and the distance from the outer retainer face to the surface of the valve cap boss is 1/8 inch (3 mm) shorter than the valve cap nose length. 4. Plastic thumbscrews hold valve retainers in position in bottom valve pockets. Tighten these screws just enough to provide friction so retainers and valves in bottom pockets will not fall out during valve cap installation. 5. Lubricate and install a new O-ring in the groove on the valve cap nose. Some high pressure cylinders use a soft metallic wire gasket in lieu of the O-ring. Insert the valve cap and tighten the bolts evenly to the recommended torque in Table A-3 in Appendix A. In correct assemblies with new valves, the distance from the underside of the cap to the valve cap boss surface is a uniform 1/8 inch (3 mm). The distance is slightly less with re-worked valves. NOTE: Ensure all parts, gasket faces, and mating surfaces are clean. Apply clean, fresh oil on threads before re-installing bolts (Exception: stainless steel bolts use Never-Seez). Torquing Valve Cap Bolts Seat Guard Valve Cap Cushion Plate SUCTION VALVE Wafer Spring Valve Cap O-Ring Plastic Retainer-Keeper (Thumbscrew) Cylinder Bore DISCHARGE VALVE Wafer Spring Discharge Valve Plate Discharge Valve Spring Guard Cushion Plate Metallic Flat Valve Gasket Guide Ring Proper fastener tightening technique is essential to seal valve caps with soft metallic wire gaskets used in some high pressure cylinders. It is important to torque bolting fully in even, gradual steps. Do not tighten a valve cap with bias on one bolt or cock it in the bore. Such bias or cocking can cause 3/11 PAGE 4-7 Seat FIGURE 4-6 Typical Valve Assemblies
- Page 12 and 13: For Models: JGH:E:K:T Ariel Contact
- Page 14 and 15: Section 1 - Tools For Models: JGH:E
- Page 16 and 17: Section 1 - Tools For Models: JGH:E
- Page 18 and 19: Section 2 - Instrumentation For Mod
- Page 20 and 21: Section 2 - Instrumentation For Mod
- Page 22 and 23: Section 2 - Instrumentation For Mod
- Page 24 and 25: Section 2 - Instrumentation For Mod
- Page 26 and 27: Section 2 - Instrumentation For Mod
- Page 28 and 29: Section 2 - Instrumentation For Mod
- Page 30 and 31: Section 2 - Instrumentation For Mod
- Page 32 and 33: Section 3 - Maintenance For Models:
- Page 34 and 35: Section 3 - Maintenance For Models:
- Page 36 and 37: Section 3 - Maintenance For Models:
- Page 38 and 39: Section 3 - Maintenance For Models:
- Page 40 and 41: Section 3 - Maintenance For Models:
- Page 42 and 43: Section 3 - Maintenance For Models:
- Page 44 and 45: Section 3 - Maintenance For Models:
- Page 46 and 47: Section 3 - Maintenance For Models:
- Page 48 and 49: Section 3 - Maintenance For Models:
- Page 50 and 51: Section 3 - Maintenance For Models:
- Page 52 and 53: Section 3 - Maintenance For Models:
- Page 54 and 55: Section 3 - Maintenance For Models:
- Page 56 and 57: Section 3 - Maintenance For Models:
- Page 58 and 59: Section 4 Part Replacement For Mode
- Page 60 and 61: Section 4 Part Replacement For Mode
- Page 64 and 65: Section 4 Part Replacement For Mode
- Page 66 and 67: Section 4 Part Replacement For Mode
- Page 68 and 69: Section 4 Part Replacement For Mode
- Page 70 and 71: Section 4 Part Replacement For Mode
- Page 72 and 73: Section 4 Part Replacement For Mode
- Page 74 and 75: Section 4 Part Replacement For Mode
- Page 76 and 77: Section 4 Part Replacement For Mode
- Page 78 and 79: Section 4 Part Replacement For Mode
- Page 80 and 81: Section 4 Part Replacement For Mode
- Page 82 and 83: Section 4 Part Replacement For Mode
- Page 84 and 85: Section 4 Part Replacement For Mode
- Page 86 and 87: Section 4 Part Replacement For Mode
- Page 88 and 89: Section 4 Part Replacement For Mode
- Page 90 and 91: Section 4 Part Replacement For Mode
- Page 92 and 93: Section 4 Part Replacement For Mode
- Page 94 and 95: Section 4 Part Replacement For Mode
- Page 96 and 97: Section 4 Part Replacement For Mode
- Page 98 and 99: Section 4 Part Replacement For Mode
- Page 100 and 101: Section 4 Part Replacement For Mode
- Page 102 and 103: Section 5 - Start Up For Models: JG
- Page 104 and 105: Section 5 - Start Up For Models: JG
- Page 106 and 107: Section 5 - Start Up For Models: JG
- Page 108 and 109: Section 5 - Start Up For Models: JG
- Page 110 and 111: Section 5 - Start Up For Models: JG
Section 4 Part Replacement For Models: JGH:E:K:T<br />
Valves<br />
Most valves in cylinders of JGH:E:K:T frames use non-metallic plates. Before servicing any valve,<br />
see the correct valve assembly drawing and parts list and manufacturer literature in the Parts Book.<br />
On the valve assembly drawing, note that valves use different springing for different pressures. The<br />
cylinder cover sheet in the Parts Book lists the valve originally supplied with each cylinder. Different<br />
operating conditions may require different springing.<br />
Base suction valve selection on operating suction pressure and discharge valve selection on operating<br />
discharge pressure. Proper valve spring selection is also based on operating speed (RPM), gas<br />
specific gravity, and gas suction temperature. Contact your packager and/or <strong>Ariel</strong> for assistance in<br />
valve selection.<br />
CAUTION: Before attempting to remove any valve cap, vent ALL pressure from the compressor<br />
cylinder in both the suction and discharge cylinder passages.<br />
Valve Removal<br />
1. Slightly loosen all cap screws on a valve cap; the cap should stay in its original position. If it<br />
pushes outward, STOP! Completely vent the cylinder. See Caution above. See Fig. 4-6.<br />
2. After all the above safety checks and with cap screws still in place but loosened, pry the valve<br />
cap out until the O-ring clears the cylinder to confirm proper cylinder venting. Use a pair of pry<br />
bars or screwdrivers, one on each side of the cap, to pry it out.<br />
3. Remove cap screws and valve cap.<br />
CAUTION: The valve cap, retainer, and/or valve may fall out of bottom valve pockets if<br />
not supported. Support them carefully after removing cap screws to prevent personal<br />
injury.<br />
4. With the retainer still in place, thread a valve tool over the valve center bolt. See Fig. 1-1.<br />
5. It may be necessary to loosen the plastic thumb screws in the valve retainers.<br />
6. For high pressure applications that use a metallic wire gasket seal, the cylinder vents upon loosening<br />
the cap screws. Use the valve removal tool shown in Fig. 1-1 to unseat the metallic wire<br />
gasket.<br />
7. Pull out the valve and retainer together.<br />
8. Cylinder class 2-5/8K-FS-HE and 2-5/8T-FS-HE tandem cylinders require removal of suction and<br />
discharge piping and the cylinder head to access the concentric valve. A concentric valve combines<br />
suction and discharge valves in one assembly. See Caution at “Piston and Rod Removal”<br />
on page 4-8.<br />
9. In most cases, the flat metal gasket remains in the pocket. It is difficult to see. A flashlight and a<br />
small mirror on an adjustable rod are the best tools to see the gasket clearly. On cylinders with<br />
horizontal valves, the gasket may fall into the gas passage. Use a small magnet on a flexible<br />
extension rod to fish it out. For optimum sealing, replace valve seat gaskets anytime a valve is<br />
removed from a cylinder of a unit that has been in service.<br />
PAGE 4-6 3/11
Change language